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In Brazil, passion flower is grown across almost the entire country. The predominant disease of the passion flower cropis passion fruit woodiness, caused by the potyvirus cowpea aphid-borne mosaic virus (CABMV), and transmitted byaphids in a nonpersistent manner. The disease reduces the useful life of the orchard from 36 months to approximately18 months. Up to now, there has not been an efficient method for disease management. The aim of this work was toevaluate the efficiency of systematic roguing of diseased plants through weekly inspections, for disease management inthe field. The latent and incubation periods of CABMV in passion flower vines were determined in order to optimizeroguing efficiency. Passion fruit plants inoculated with CABMV started to act as sources of inoculum from 3 days afterinoculation (DAI), and the symptoms were expressed, on average, at 8 DAI. Five field experiments, conducted in thestates of S~ao Paulo and Bahia, Brazil, demonstrated that systematic roguing of diseased plants was significantly efficientfor managing passion fruit woodiness disease. In order to facilitate identification and subsequent removal of theinfected plants, they need to be grown separately. This cultural practice can be recommended for managing passionfruit woodiness disease, provided it is applied on a regional scale by all passion fruit growers. The development ofsome pilot plantings for the application of roguing in a passion flower-producing region is recommended to validatethe use of this technique for managing passion fruit woodiness disease. Made available in DSpace on 2020-02-12T18:09:33Z (GMT). No. of bitstreams: 1 Longlastingsystematicroguing2019.pdf: 557891 bytes, checksum: 92a54d52de1484d1506a3b1545811030 (MD5) Previous issue date: 2019

A videira encontra-se amplamente distribuída em todo mundo. No Brasil é cultivada principalmente na Região Sul e nas últimas décadas, no Submédio do Vale do São Francisco, onde grande parte da produção é destinada ao mercado internacional. Diversos fatores podem afetar a produtividade da videira, visto que esta cultura é bastante exigente quanto aso manejo de doenças. As principais doenças da videira causadas por fungos são míldio, oídio, ferrugem, declínio, antracnose e requeima. No Brasil, atualmente, existe apenas uma doença bacteriana de importância econômica para esta cultura que é cancro-bacteriano da videira e encontra-se com ocorrência limitada a alguns estados do Nordeste, Roraima e na região norte. As viroses também acarretam importantes prejuízos ao viticultor. As principais viroses reportadas no Brasil são enrolamento da folha, complexo do lenho rugoso mancha ou mosaico das nervuras, degenerescência da videira e necrose das nervuras. Made available in DSpace on 2018-06-26T01:02:13Z (GMT). No. of bitstreams: 1 InformeAgropecuariov.37n.291p.86962016.pdf: 14512443 bytes, checksum: bb0e07934a5b8702f8f40adf7ecf84ce (MD5) Previous issue date: 2016-11-22